Old Second National Bank, Frankfort Branch Basic Info Reviews Routing Numbers Map & Direction Name: Old Second National Bank, Frankfort Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 20201 South La Grange Road Frankfort, Illinois 60423 Will County View other branches Phone: 815-469-7600 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer071900760YY071910187YY071916822YY071922887YY071926867YN From: To:
